Grinding machine



n March 27, 1928.

J. DE. KONING GRINDING MACHINE Filed 9415.20, 1924 10 Sheets-Sheet lMarch 27, 1928.-

',J. DE KONING GRINDING MACHINE Filed' Aug. .720. 1924 1U Shane-Sheet 2S11/vento p .al @a1 fw atto: ne 43 March 27, 1928-. 1,664,024

J. DE KONING GRINDING MACHINE Fi1ed Aug. 20. '1924 l0 Smets-Sheet 5 Qi,a@

31a/vento@ Mmh 27, 192s. 1,664,024

J. DE KONING GRINDING MACHINE Filed Aug. 20. 1924 1Q Sheets-Sheet 4 las:

March 27, 1928. 1,664,024

J. DE KoNlNG GRINDING MACHINE Filed Aug. zo, 1,924 1o sheets-sheet 5March 27, 1928. 1,664,024

J. DE Komma GRINDING MACHINE Filed Aug. 2o.- .w24V 1o Sneets-sheet eJZOZQJDQ Han@ 0f/u, W. ma, y l @um nu,

Y'ls/laurel. 21, 192s.

J. DE KONING GRINDING MACHINE l Filed Ag. 20. 1924 10 Sheets-Sheet 731a/vento@ 'Y for March 27, 1928.

J. DE KONING GRINDING MACHINE 'Filed Aug. zo. 492,4

10 Sheets-Sheet 8 nfueufoz ce? Edi-alamy kfozwzq March 27, 1928.1,664,024

J. DE KONING GRINDING MACHINE Filed Aug. 20. 1924 10 Sheets-Sheet 9attorno,

March 27, 1928. 1,664,024

J. DE KoNlNG GRINDING MACHINE Filed Aug. 20, 1924 10 Sheets-Sheet 10 leav v gwvento'o atto: ne q Patented Mar. 27, 1928. v

' Unirse stra-'rais vPATENT oFFiCE.

JACOB DE KONING, OIk GRAND RAPIDS', MICHIGAN, ASSIGNOR TOGALLlVIIIilYELR` AND LIVINGSTON COMPANY, OF GRAND: RAPIDS, MICHIGAN, ACORPORATION 0F MICHI- GAN.

GRINDING MACHINE.

Application led AugustA 20, 1924. i Serial No. 733,059.

The present invention relates to grinding machines and the likeemploying rotatable I compactly and conveniently disposed interwrelatively; and further,'to provide in'such a machine, a minimum vofnecessary driving parts; and further, to providein'machines of thischaracter improved belt-tightening and belt-shifting means; 'andfurther', to provide in such machines employing rotatable cutters;`Vgrindersorother tools; an improved headstock combining a live and adead center. n

These and any other objects lhere'sinafter appearing are attainedy by,andthe invention finds preferabley embodiment in, the Structure orstructures,hereinafter' particularly described in the body of thisspecification and illustrated by the accompanying drawings, in which'z#Figure l 'is a front view of a grinding ma. chine; u

of; v Figure .3 is a top plan view vof the same', but showing certainparts in another posi.i tion; f

Figure A; is a central vertical ysectional view of thesupportingcolumnof the machine and connectedparts; Y

Figure 5 is a transverse sectional view of thesame taken on line 5-'5 ofFigure l;

lFigure 6 isa like sectionalgview of the parts seen in Figure 5, butshowing thesame i in another interrelative position;

Figure 7 is a. transverse sectional view of parts seenin Figure 4,;takenon Lline 7-,- 7 ofsaidview; v

Figure 8 isa transverse se tional view of parts shown `in Figurell`taken on line 8 8 ofsaid figure; n

Figure 9 is a sectional View of ,parts shown in Figure 8, taken onv line9-"9 of said view; Y n

Figure lO- is a central axial section of lFigure is a right-hand endview there-V said column and the sleeve turning thereon and of the basesupporting the'column, and showing the position of certain operatingparts of the machine;

. Figure ll isa topy plan view of pulleys seen -at the upper part of-Figure l0, show-- Ving one position of said` pulleys rin solid linesand another position thereof in dotted lines;" Y Figure 'l2isa` view ofthe upper portion of the belt carried by said pulleys as seenfro'mtheright-hand side yof Figure l0;

HFigure k13 is a view of idler pulleys inthe i base of' themachine asseen in VFigureflO,

`and showing the 'belt' carried thereby;

yFigure 14 is` a vertical'sectional view. of'a portion of vsaid base,and' illustrating the vertically movable member carrying said idlerpulleys; l p

Figure l5 is another vertical sectional view of said base, illustratingthe rotatable driving meansof vsaid machine; i

kFigure 16 is l a' side view of a portion of said' means,y illustratingthe 'belt-shift thereof in anotherposition; Y

. Figure 17V is a transverse sectional view of a portion thereof takenon line l7`17 of Figurel; l igure'lS'is' a 4'vertical sectional view ofparts -(')fjsaidmachine taken on line l8-18 of Fi'gurel; n .ji

Figure 19 isa top` plan viewl off-a forward portion of'the'machineillustrating the lever arm which reverses the mechanism which feeds'ormoves-the carrier of the machine;

Figurer 20 `is a' transverse Vsectional view of 'certain parts of lthemachine taken on the vertical. plane in which lies the aXi's of thescrew which raisesand lowers'said parts and "theaXis of the shaftwhose'ro'tation turns: the gear-nut on said screw;

Figure 21 yis a transversefsectional view of certain partsseeninFigure'21; Y Figure: 231s a topplan view of means for feeding ormoving [the carrier of'themavchine and for*L reversing such feedingmovement; o i i Figure 24 lis a vertical sectional view of the sametakenron line 2li-24A of FigureQ;

, f lool Figure 22 is avert-icalaxial sectional'view' Y Figure is atopplan view of a headstock having an electric motor;

Figure 26 is a side view of the same, shown partly in vertical sectiontaken on line 26-26 of Figure 25; and

Figure 27 is a transverse vertical sectional view of a portion thereoftaken on line 27 of Figure 26. Y i

In the embodiment of the invention chosen for illustration by theaccompanying draw- Y ings and for detailed description in the body the4type commonly called universalgrind ing machines7 is shown. II' a base1 housing arrotatable drivingy eleofthis specification, a grindingmachine of This machine has ment-a shaft 2-desirably rotated by anelectric motor 8 in the base, whereby the mechanical movements of thevarious parts of the machine are effected, including the rotating of thegrinding wheel or wheels, the feeding movement of the parts Ycarryingthe work, and also the operating of a pump (not shown) for cooling thework through a hose 4 having a nozzle 5.. This base supports,

and Athere is secured thereto as by bolts 6, a

vertical hollow column 7 on whose upper end is mounted the arms 8 havingbearings in which rotatesrthe shaft 10 carrying the rotatable tool orgrinding wheel or wheels 11. The rotatable driving elementl-v rotatesthe grinding wheels by means of a belt-12 extending upwardly through thehollow column and carried by one or the other of the stepped portions18, 14 of the pulleyl part of said element and by the pulley'15 ofl thegrinding wheels shaft 10, the opposite runs 16, -17 of the belt beingrespectively carried by the idler pulleys 18,19 fon the arms 8 and bythe idler pulleys 20,21 1nounted on the member 22 having a free verticalsliding movement on a guide rod 24 in the base; while the belt 25carried by saidv elements pulley 26 drives the means for feeding ormoving the carrier of the machine as hereinafter explained, and the belt27 carried by said elements pulley 28 operates the pump (notl shown) forsupplying cooling water to the work through the hose 4. I

Y It will be seen that these idler pulleys 20, 21are so positionedthatythe runs of the belt 12 are deflected thereby from an approximatelyvertical to an approximately horizontal direction, sothat theweight ofthe member 22 operates to tighten the belt. The said member may beraised by Va lever 80 fulcrumed at 81 on the base, to 'permit i thebeltVtobe shifted from one of the stepped portions 18, 14 of the drivingelements puls.

ley part to the other ofv said portions, by a belt-shift slidable in abearing 82 and having a fork 84 engaging in a groove 85 in said pulleypart which is splined at 86 on the rotatable ydriving element 2. (SeeFigures 15 and 16.) A sleeve 87 is turnably mounted on the column 7 andhas a vertical arm 41 of the sleeve.

guide portion 88 in which a knee 89 is vertically movable on the sleeve,being raised by a screw 40 non-rotatably seated in an y AA table 42 ismovable horizontally in ways 50 on the knee toward and away from thesupporting column; and a carrier 48 has a movement in ways 51 on thetable transverse to the tables movement. The knee is raised by rotating,as by the crank-wheel 44, a shaft 45 journalled at 46'in the knee andcarrying a bevel gear 47 meshing vwith a bevel gear nut' 48 journalledat 49 on the knee and turning on the/screw 40 (see Figure v20). TheVsleeve 87 may be clamped in non-turnable relation to thecolumn by ascrew 52 journalled in one 60 at its rear end. iA sprocket chain 61 is.carried by sprocket wheels 62, 68 on the .shafts 59 and 55 respectively(see Figure The carrier 48 may be Vmoved manually on the ways 51v byturning the shaft 64jour-v nalled on the table and turnable by itsdetachable cranks 65, 66 on its opposite ends (at the front and rear ofthe machine re-y spectively)'this shaft having afgear 671nesh ing withthe rackv 68 on the under side of the carrier (see Figures 8 and 21).*The carrier .48 may also be moved on the ways V51 automatically, i. e.,fed, by means of the following mechanism The belt 25 is carried by anddrives the pulley 70, whose worm shaft 71 journalled on the table421meshes with the worm wheel 72 keyed on the shaft;78. Either of theclutch members 74,'turning freely about said shaft, or 75 keyed to thealined shaft 77, is adapted to beV engaged' by the intermediate clutchjmember 76splined l on shaft 78. VVhenthe clutch'memberv75 is thusengaged, the alined shaft 77 is rotated; when however theV clutch member74 is engaged by the intermediateclutchV member 76, the gear 78 integralwith .memberv74 and meshing with gear 79 on theshort shaft 8O rotatesthe shaft 77 in theopposite direction through the gear 81 on shaft 80,the

idler gear l82 andthe gear`88 keyed on said shaft 77. (See Figures 28and l24.) c

A manually operated clutch and changespeed gearing are shown `inFigures21 and 22, comprising: The clutch membersf84, 85, the former being keyedto shaft 77 and the latter splined to an alined shaft 8,6, are movedinto and out of engagement byk theV slide rod 87 carrying a fork 88engaging in -tions 125 of the work-holders.

:th groove-89 of member 85.*"217h'en` engaged, these clutch membersrotate said alined shaft 86 .which carries 'change-speedgears r90,91

'adapted'to mesh, by sliding the shaft 86 vin its bearing 92, either' ofthefchange-sp'eed 'gears 93 or 94y onv the shafty 95v carrying a gear-96meshing with al gear 97 on a shaft 98` andmeshing with lthe carriersrack'68,

The shaft 95 may be manually turned' by its crank-wheel 99 tomove the,carrierv 43. 'The feeding movement of the carrier is automati- 'cal'lyreversed by the following mechanism:

Swingably'mounted onrthe table 42 is a lever arm 100 (Figures 19 and 23)whose y ful'- crum1 shaft v101 carriesthe ar1n102. A link vr10,37isconnected to this arm 102 and to'ia dejlever arm 100 by a lug109`mounted lon the carrier shifts this-intermediate clutchmember bythe-movemlentfof the carrier. The intermediate clutch member 76vis heldin one or the other clutch engagement by an arm 110, on the shaft 105,engaging at its reversely-bevelled end 111 a roll 112 carried by aplunger 113 pressed outwardly by a spring 114 (seeFigures 23 and24). Astop for limiting the movement of the carrier when manually moved isshown at 115. Y

In Figure 2, a belt-tightener for `the belt 25 is shown consisting of abell-crank lever fulcrumed concentrically with the pulley 70 and havinga horizontal weight arm`116 and idler pulleys 117 mounted on its otherarm 118.

An oil 'drip pan is shown at- 119 formed on or carried on the base 1. Aplatform 120 is pivotally mounted at 121 on the carrier 43 to swing in ahorizontal plane on the side bearings 122, being held in Vadjustment bya screw 123. This platform, supported as it is by the sleeve 37, knee39, table 42 and carrier 43, in turn supports the work to be ground,this platform having an invertedk T-shaped groove 124 extending in itslongitudinal direction and adapted to receive and hold thecorrespondingly shaped foot-por- These workholders may be of variouskinds adapted to the workpieces to be held thereby and the character ofthe operations to be 'performed thereon. A tailstock is shown at 126 anda headstock may be mounted adjacent the opposite end of said platform.In Figures' 25, 26 and 27 a headstock is illustrated adapted to besecured to the platform 120 in the position indicated in Figure 1. iThis headstock comprises a shaft 130 bored to tightly hold a taperedpiece 131 having a ,center 161 adapted to support a workpiece, indicatedat 132, rotatably about said center, andheld on a mandrel 162. Thisshaft is rotatably `tated byy suitable y means,

' body mounted in a bearing- 133 in theV Abody 160'fof the headstockandhas `keyed fthereto' a radial flange'1`34. An annular member 135 isturn-V ablev onV the shaft'concentrically therewith and-has means, asthe pin Y136, "for engaging work-.rotating means,l as the dog'or clamp137"secured to the work.` An element,the gear 138, is lturnablyi'i'iounted on the vshaft V130conc`'entrically therewith.` Couplingmeansv are 'provided for `connecting ythe shaft 130 (by itsflange 134),said member 1135 Land "said gear element 1,38 lto rotate together, and

to also `connect only saidy member`f135 fand Y saidr element 138 torotatetogether,,such means comprising a. bolt139 slidable th'roughholes140,'v 141 and 142 in said member, said element and said flange, respectively`,*in which position tliework 132 isroasy the'.`gear;143 meshingwith-the gear element 138; Or`,fthze bolt 139 'maybe slid outwardly ,outof the vhole 142 in thev shafts flangei134lbut'e'ngaging in the .holesof member' 135 and element 138 only, in which `position ofthis bolt thework is rotated about the center 161 which is now a dead7 center.

In this second position of this bolt 139, a pin or bolt 144 slidable ina hole 145 in the l of the headstock is slid into said hole 142 in theshafts flange v134 to hold the shaft from rotation. The bolt 139 and thepin or bolt 144 may be connected to move together into one position orthe other by a yoke indicated at 146 in dotted lines. The gear element138 may comprise a pairV 0f gears 138 and 147, one or the other of whichmay be brought into mesh with the changespeed gears 143 or 148 splinedon the shaft 165 and shifted by a slidingrod 149 carrying a fork 150engaging the sides of the gear 148. V`The gear element 138 may bevdriven by any suitable means, as by an electric m0- tor 151 carried bythe headstock and having a gear 152 meshing with the gear 153 on theshaft 165.

It will be seen that this headstock is adapted for use on lathes, andthe like. as well as-grinding machines.

` The arms 8 supporting the shaft 10 of the grinding wheel 11 extendyupwardly from a head 173 mounted on the column turnably in a horizontalplane about an axis 174. The idler pulleys 18, 19 are mounted on thehead rotatably on horizontal axes 175, 17 6 and carry the runs 17, 16 ofthe belt 1 2. It will thus be seen that the head 17 3 may be turned toswing the grinding wheel, and the axes 10, 175 and 176 to variouspositions as indicated in Figure 11, the belt 12 thus twistingaccordingly. Graduatedcircles are shown at 170, 171, 172 and 177 forindicating angular adjustments. Y

The invention being intended to be pointed out in the claims, is not tobe limited to or by details of construction of the particularyembodiment thereof illustrated by the vdrawings or hereinbeforedescribed.

I claim:

Y1. In a machine of the character described: a hollow column; a toolrotatably mounted on the column and having anoperatingpulley; arotatable driving element having a pulley below the first-mentionedpulley; a sleeve turnably mounted around the column; a knee vhaving avertical movement on the sleeve; a tableJ having a movement on the kneetoward and away from the column; a work-supporting carrier having amovement lon the table transverse to the tables movement and having arack; a shaft rotatably mountedon the table and carrying a gear meshingwith the rack and having a sprocket wheel and a crank at one side of'the machine; a shaft rotatably mounted on t-he table parallelly with thefirst-mentioned shaft Y and having a sprocket wheel and a crank on theopposite side of the machine; a chain on the sprocket Wheels; a beltcarried by said pulleys and extending in the hollow column.

2. In a machine of the character described: a hollow column; a toolrotatably` mountedV on the columnand having an operating pulley; adriving vpulley below the first-mentioned pulley; a sleeve turnablymounted around the column; a knee having aA vertical movement on thesleeve; a table having a movement on the knee toward and away shaft; abelt carried by the pulleysand ex- Y tending in the hollow column.

In testimony whereof I havehereunto set my vhand at Grand Rapids;Michigan; .this

l,18th day of August, 1924;.

JACOB DE KoNrNGL vfrom the column; a'work-supporting'carrier

